pakker



(NO Modeln) 2 sheets-sheen 1. E. PARKER.

LOCK.

No. 300,393. Patentedune 17, i884.

MA EMA i w. 4 @fn- QN@ Model.) 2 Sheets-Sheet 2.

B. PARKER.

LOCK. No. 300,398. Patented June 1'7, 1884.

gbl/lll' will] mman I :NITED S'rafrns Partnr Ottica.

EMERY PARKER, OF NEIN BRITAIN, CONNECTICUT, ASSIGNOR TO THE NASHUA LOCK COMPANY, OF NASHUA, NFFW HAMPSHIRE.

LOCK.

SPECIFICATION :forming part of Letters Patent No. 300,393, dated June 17, 1884.

(No model.)

To @ZZ whom, it 77mg/ concern.:

.Be it known that I, Barner PARKER, of New Britain, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Locks; and I do here by declare that the following is a full, clear, and exact description thereof, whereby a person skilled in the art can make and use the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon.

Like letters in the figures indicate the same parts. Y

Figure l is aplan View of the interior of my improved lock, part of the face-plate being cut away to show construction. Fig. 2 is a face View of the lock, showing part of the spindle. Fig. 3 is a top View of the lock in place in a door, showing one knob secured to the spindle. This View is on reduced scale. Fig. 4 is a side View of the swivel-spindle with part broken away near the center, and a View in section of the hub on plane denoted by line x fc of Fig. l. Fig. 5 is a View in central section of the hub witlparts in place for use on a right-hand door. Fig. (i is a sectional view of the saine parts with spindle and hub reversed for use on a leftliand door. Fig. 7 is a View in section through the latch on line 11,1 'y oi' l. Fig. S isafront View of a strikingplate on reduced scale.

My invention relates more particularly to the class oi' mortise-locks adapted for use on the main doors of buildings; but certain features are equally applicable to other classes of locks.

My invention consists, mainly, in certain details of construction of the face that render the lock reversible that is, adapted for use on right or left hand doors and on different depths oi' rabbet-in improvements in the swivelspindle and hub that add to the security of the lock and to its convenience in use, and also in certain other details, as hereinafter more fully described.

In the accompanying drawings, the letter c denotes the cast-metal case of a mortise-loek, secured in the ordinary manner to the ornamented faceplate b. This plate is, more prop` erly speaking, an oblong box open on the rear,

as it has sides b and ends Z;2 that extend backward over the lock-case and present unbroken surfaces that can be readily polished to any desired degree, as by means of a buiiing-wheel. This peculiar construction of the face adapts the lock :for use on a door with either a right or left hand rabbet, or (between certain limits) with rabbets of diiierent depths, a part of the face projecting, as seen in Fig. 3, but presenting only a finished surface to View.

Along the side of the ease a and on the coverplate a are cast supporting-ribs a2, in such position that when the parts are in place, as seen in the sectional view in Fig. 7, these ribs are in contact with the sides b of the face-plate Z. Vithin the lock-ease the sliding latch-bolt c is pivoted to the lower end of the swinging tumbler d, that is operated by the lugs on the spindle-hub e.

The pawl f and tumbler g, operated by the key, are of ordinary construction, as is the bolt h and its connected levers and springs, by means of which the lock is converted from a latch operated from either side to a lock operated from the inside only by use of the knob and spindle. The latch-bolt is so made as to be readily reversed in its socket, as illustrated in the sectional View in Fig. 7. The spindlehub e lits and turns in bearings in the case and the cover-plate a', and is made in two parts, e e2, adapted to turn each on the other. The hub is reversible end for end in its bearings, and the part c', always placed on the side next the inside of the door, has an angular central opening, into which the swivel-spindle 'i is tted. The part ci has as a new feature the lug e3, with an arm extending along the part e past the plane ofjunction of the hub parts, and this lug e has on its face a groove in the line oi' the axis of the hub, into which the end of the bolt lz will take in both positions of the part c2. By this construction the spindle and hub can be arranged so that the lock can be usedfor either right or left hand doors, and

the spindle part and knob on the outside oi' the door can be locked while the inner knob is free to turn to open the door. The hub part ci" has a larger central opening than the other part, so that a shoulder .is formed between the two parts, and the swii-*el-spiwll'3 vents this.

is-niade of two pieces of different size in section, each fitting, however, .in the respective parts of the hub, as seen in the sectional view of the spindle in Fig. 4. rlhis shoulder between the parts aids the workin an in correctly fitting the spindle in the hub, as it is merely necessary to insert the spindle and bring the shoulders to a bearing and then fasten on the knobs. It also prevents any attempt to enter without a key, as may be donc with the old form by taking off the outside knob and pushing the spindle inward and completely out of the hub, which is then left exposed to be opy erated upon by any convenient means for turnling the inner hall' of the hub, and so opening the door. My improvement effectual] y pre- The latch-lever d is fulcrumed at its upper end on a projection on the inner face of the latch-case, and pivoted at its lower end to the latch-bolt c. Between these points it bends outward around the hub, and has the bearing-faces d d on the side next to the hub and above the plane of the spindle.v The hub e bears the lugs c and c5 upon the upper and lower sides, and also the arm e, that projects laterally on the side opposite the bolt h and into the re entrant side of the lever -latch. These lugs c4 and c5 and the arm e engage the faces d and d2 on the lever-latch when the hub is turned, and serve to throw back the latch-r bolt. This peculiar arrangement of the lugs I claim as my inventionl. In combination, the lock case a, with hanged face b, the reversible latch-bolt c, the swivel-spindle with shoulder or stop, the reversible hub e, with parts fitting the respective swivel-sections, and the latch mechanism, all substantially as described.

2. In combination, in alatch, a swivel-spindle having a shoulder and a partible hub also having a shoulder, which, by contact with that on the spindle, keeps the parts from moving toward or upon each other when they are in the bolt h in either of the described positions of the hub, all substantially as described.

5. In a latch, the combination-of the case a, the lever d, with the bearing-faces d cl2, and

the reversible hub c, with lugs e c5 and the arm e, all substantially as described.

EMERY PARKER. Vitnesses:

(3i-ms. L. BURDETT, En. F. DIMooK. 

